Ls7 lifters max lift?
#1
TGO Supporter/Moderator
Thread Starter
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,724
Likes: 0
Received 89 Likes
on
75 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Ls7 lifters max lift?
So I noticed that the ls7 lifters are not clearanced as much as even the stock lifters... Are you guys running these on higher lift more aggressive lobes?
#2
COTM Editor
iTrader: (22)
Join Date: Mar 2001
Posts: 9,905
Likes: 0
Received 1,855 Likes
on
1,270 Posts
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Ls7 lifters max lift?
I think it's maybe the only lifter you can buy anymore. It's the service part for all the LS engines.
#4
COTM Editor
iTrader: (22)
Join Date: Mar 2001
Posts: 9,905
Likes: 0
Received 1,855 Likes
on
1,270 Posts
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Ls7 lifters max lift?
What do you call high lift?
I think my stroker engine has 0.630 lift with a 1.7 rocker.
I think my stroker engine has 0.630 lift with a 1.7 rocker.
Last edited by QwkTrip; 02-21-2019 at 01:02 AM.
#5
TGO Supporter/Moderator
Thread Starter
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,724
Likes: 0
Received 89 Likes
on
75 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Ls7 lifters max lift?
it may have nothing to do with the actual lift but rather how steep the ramp is.
I've never actually seen a hydraulic roller lifter that wasn't clearanced, so when I took these out of the box last night to install them I was kind of like what?! So I stopped.
-- Joe
#6
Supreme Member
iTrader: (20)
Re: Ls7 lifters max lift?
I ran a .383 lobe on a 1.6 rocker just fine on my gen 1 hyd roller block.
comp magnum high lift lobe. Not stupid aggressive but aint mild
guys run xfi .360-.370’s lobes on them just fine. No clearance issues. Some ls lobes even more aggressive but bigger cam cores
comp magnum high lift lobe. Not stupid aggressive but aint mild
guys run xfi .360-.370’s lobes on them just fine. No clearance issues. Some ls lobes even more aggressive but bigger cam cores
#7
COTM Editor
iTrader: (22)
Join Date: Mar 2001
Posts: 9,905
Likes: 0
Received 1,855 Likes
on
1,270 Posts
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Trending Topics
#9
TGO Supporter/Moderator
Thread Starter
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,724
Likes: 0
Received 89 Likes
on
75 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Ls7 lifters max lift?
-- Joe
#17
TGO Supporter/Moderator
Thread Starter
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,724
Likes: 0
Received 89 Likes
on
75 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Ls7 lifters max lift?
Just type ls7 lifters in google and click shopping.
I agree some might be BS, but I trust vendors like speedway motors.
https://www.speedwaymotors.com/LS7-R...SABEgILsfD_BwE
-- Joe
I agree some might be BS, but I trust vendors like speedway motors.
https://www.speedwaymotors.com/LS7-R...SABEgILsfD_BwE
-- Joe
#19
TGO Supporter/Moderator
Thread Starter
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,724
Likes: 0
Received 89 Likes
on
75 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Ls7 lifters max lift?
Anyway. I guess I'll put them in.
Right now I'm trying to find a cam plug locally for the back of the block. wasn't one in my box of freeze plugs. ugh.
-- Joe
#20
Member
The following users liked this post:
Bill Chase (05-09-2022)
#23
Supreme Member
iTrader: (2)
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 9,994
Received 386 Likes
on
329 Posts
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Ls7 lifters max lift?
I have them in my Vortec 350. Comp Magnum high lift lobes with 1.7 rockers at .578" lift. 155# on the seat and 350# open double springs. Shift at 6,200 with a 6,500 rpm fuel kill. Has seen multiple dyno runs to 6,500. Also saw numerous 6,500 rpm fuel shut-offs dialing in the 4L85E shift points.
Last edited by Fast355; 02-27-2019 at 11:39 PM.
#24
Supreme Member
iTrader: (2)
Join Date: Jan 2005
Location: Hurst, Texas
Posts: 9,994
Received 386 Likes
on
329 Posts
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Ls7 lifters max lift?
My geometry was perfect with aftermarket assault racing heads that were milled .020", have .100" longer valves, comp cam on magnum lobes and and 1.7 rockers with 7.2" comp magnum pushrods.. Maybe I just got lucky. Thats why you ALWAYS check your setup. An adjustable setup pushrod is a very valuable addition to the tool box.
Thread
Thread Starter
Forum
Replies
Last Post